4 AT Commands, S-Registers, and Result Codes
57
S8
1 sec. 0–255 2 Sets the length of a pause
4–255† 4† caused by a comma charac-
4–7‡ 4‡ ter in a dialing command.
S9
100 ms 1–255 6 Sets delay between when
the modem detects a valid
carrier signal and when it
turns on its CD circuit.
S10
100 ms 1–254, 7 Sets how long a carrier sig-
255 nal must be lost before the
modem disconnects. S10=
255 causes the modem to
not disconnect with loss of
carrier.
S11
1 ms 1–255 70 Sets spacing and duration
80–255* 80* of dialing tones. 50 ms is
80–255‡ 80‡ the recommended minimum.
S13
decimal 0, 1–127 37 (%) Sets ASCII code for remote
configuration escape
character. S13=0 disables
remote configuration.
S17
10 ms 1–255 25 Sets the length of the break
time (space) sent to the
local PC when the modem
receives a remote break.
S24
50 ms 0–255 20 Sets the time the DSR,
CTS, and CD signals drop
before going high again.
Used for some PBX and
CBX phone systems.
S25
100 ms 0, 1–255 0 Sets the time the DTR
signal must be dropped
before the modem
Register Unit Range Default Description
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